The fuel cost for the train to travel 500 km at the most economical speed is:

(a) โ‚น 3750     (b) โ‚น 750   (c) โ‚น 7500   (d) โ‚น 75000  

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  1. Class 12
  2. Solutions of Sample Papers and Past Year Papers - for Class 12 Boards

Transcript

Question 49 The fuel cost for the train to travel 500 km at the most economical speed is: (a) โ‚น 3750 (b) โ‚น 750 (c) โ‚น 7500 (d) โ‚น 75000 Now, in our Cost function C(๐’—) C(๐’—) = ๐Ÿ‘๐Ÿ•๐Ÿ“/๐Ÿ’ ๐’— + ๐Ÿ”๐ŸŽ๐ŸŽ๐ŸŽ๐ŸŽ๐ŸŽ/๐’— Thus, Fuel Cost = 375/4 ๐‘ฃ = 375/4 ร— 80 = Rs 7500 So, the correct answer is (c)

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.